Maintenance Inspection Schedule
52
STRUCTURAL
• • • Visually inspect unit for fluid leaks (coolant, oil, refrigerant).
• • • Visually inspect unit for damaged, loose or broken parts.
• • Inspect, clean and (if necessary) replace evaporator air filter. It may
be necessary to check or replace it more often if conditions require it.
• • Inspect evaporator drain valves (kazoos) to ensure that they are in
place, in good condition and are sealing.
• Steam clean condenser coil, APU pre-cooler coil. Do not bend over
coil fins.
• Blow out evaporator coil and evaporator water drains with air. Do not
bend over coil fins.
• Check APU mounting bolts and brackets for cracks. damage and
poor aligment.Verify tightness and torque to 100 ft/lbs (135.6 N•m) for
the claw mount, or 200 ft/lbs (271.2 N•m) for the direct frame mount.
Pre-Trip 500 Hrs Annual
2,000 Hrs
Inspect/Service These Items
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